Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ddfbc4c0c229b0b997de43136258c12ae93c696f8af3410e3c04619206b47bf' 
  AND token = 'ece1lJO1Cm8qLG13ziDMWmIPsUabGgje9946uAAq92Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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