Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c32e554745ae7ef28d9d8a8bc26e0fd5b455571eb844f601ceeb42ccb4a30d94' 
  AND token = 'uJA3hcEoovc6uiCfvkdbccC8VxWWc2N0qsptV/Rc5x8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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