Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd67c7d237de0f884881b6a2566c75af7a2d7278cfcc6a44459bd0a94489ab9c9' 
  AND token = '1GiX1i2yJmZYLN1YHL6AIYZUdw25obbU4WIMYAvwdpA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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