Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4eb0d05081dfc3a453d36cd1cd8b984e1adfe2aad531869692424532f2420705' 
  AND token = 'LzJKXqhZgmr9O0TWtTNW6dHQ3PKCiW9eoZnRAc+HYho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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