Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0f6d32f7540ed99d5b0c173911489acec3c1a67cc8ce97f4ba5b0de53c6ed0ab' 
  AND token = '1s3PxrHYsrbAuMIMCRPynB6z44ylEo51CY3JWsIE0wA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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