Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27edd02d4975baf1bb7a6adcb122737481c8e1dd75fcc0080182edf15077ab3c' 
  AND token = 'F9yqDIxzxt9fZdwziJy1D51Q3jKeoWwePMOLuwd0X1E=' 
  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"
    }
  }
}