Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edd1027a189c2ec2de4713acfac72c827ef76a91c7e4578a4347ea9787ca59db' 
  AND token = '1ufT3Cu4KtOuORnsnFpoxvw2dZpcVF1tbAcV5AFUH5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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