Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9fc254d991baae93d42de56d3925a0999e0165f49ddad20eb61c1bff9c70a1b1' 
  AND token = 'iskVGi67sBnWw9dw6YyPzofBNHnkKH7BR0TxaWfZZn8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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