Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cbd6c9324e1e8a259a608e0c8b80195f8ce3d1848dbdeebb12543608b84febd3' 
  AND token = 'Xc7i5KJExpUHEL9K3Ei9g92d82ShZM1CKgt4jRSG8bA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00096

JSON explain

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