Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '104f588ce1418addb579b501d5c2dfe144bd2da52c806d7a3bbb1e6e0eb73ebf' 
  AND token = '+IYq+54nXTjS/ttdLY4WVgC5P6MTautFbVgyABVDG8Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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