Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '664f57fc00b31fbc116c32fa769f801ad374a49c87b4cf98756636f35041f89f' 
  AND token = 'WO+OJ/dpQ3kJBbOeSFuYElRJioH5UUzsStBjyUOF3AA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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