Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47adc09ad07cf95efe9f3d397d73be65bf33eefd246eac1eb696ef19981b0d6b' 
  AND token = 'G5j8GGjp1dwCn5/pK4MrgM3wCWM/WaxMX/A+3TcOn2U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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