Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34028ed359fdc3a6f9da6c8c374cde45f8f563940b7ffb2d5a5a00430817b691' 
  AND token = '9BOb5TYryKkxVIP2+9B3PeFmoe2pmpdekRIo+nupz9c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}