Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd084eed64e1779d1c75d9d01fe3d9f2c030ab63e5c9b348cd1417dad3ebca122' 
  AND token = '6z/Xn2aBdw1bX3V9EHja9ZRPjMF77OimDMEjv/VRdhE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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