Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e55466694159b73736a697148bcc7cba489e2e1b41f63bb18f83662453ee6cd9' 
  AND token = 'AYWdx7C1ZNYVydgSRd5D2X8TlV4t1kJNSs8yQzEtyyU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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