Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc7dbb4b1593abab68d8672905f0aac94595b9e431885551c6ae452d988f0b5f' 
  AND token = 'Ke5CUP/xAT3ECY3PI2kK8511n4HZJCfrIB7wDLN9Z2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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