Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43f0626887a70fe4fb38dab827162612f2b94888117e82bbe64a7920c9889fe3' 
  AND token = 'rPwDsmbAO1NrSinPA51oKAafcZew2mgB5egOzrGD5Ig=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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