Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7281e566b70718d6a26d12dd98c7e5766178314d4d8b54fae2397cfa8f068650' 
  AND token = 'zixg1xdm8gcQHF8vO3AddM8QcmX6v6XN48c6RSTcQ2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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