Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c727c80cec76a403e89fbd5d7bae54799c997226656708361ce84f2d23c0a526' 
  AND token = '9w7F4hTVCSTO6rZLLZ6MDDkXNocKPsPn1kQ6iCJWfFE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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