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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44685ac257bfcd27e662d7f6e6ebc48b054dfe4386c26865edd0d6d1889520e1' 
  AND token = 'ozynT3SO638n+4eJu0564oradrjYjhHdSyYz209r9SY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}