Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a72e9c6a0dcf9ade8ab36ef9d80ea00593ab84cd6d04011ee06276aa7659222' 
  AND token = 'jXZCyoMt1H7FyRIM7AASZqT/kXMNRNfG4a5oiuGYLGM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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