Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b063b9e2301da965e285b856fc569214c09fe86d091a54dde8a94ccc23d9240' 
  AND token = 'EKn/oZAqdoGwNBrI2XpxDF3ztvfuu8VvqOrEwcpFxQE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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