Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '562b02146a9965ab1214a1aed50e11bbbebfd9d708f3a61d9b328c698c596d67' 
  AND token = 'Sf8JENkwkcu40xb+idSJ5enOWFaSUbSq7N8WnsJ5Rhw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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