Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd76ae5f71f9bb8287e606e44577a93ba5508e9a9205523c6a421aec25052088a' 
  AND token = 'aYhNHAgMh6D55O5eEOXX+KGm14cfdUgjTDwD32bNmrU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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