Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ccaa2ea8140084f7c13cd8ebad7d0cdcc61b802e6215920c71e148b5c122b985' 
  AND token = 'vrssYtzDJIyYOu4YvBrZcta/aQ7//Q+9fDcVbFPDBnw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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