Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ea93deea597c8bbb85bafa132965a458bb8aabf0859287822b23dfef2888972' 
  AND token = 'D6AQjHUAVZ0YItcw0pQlzwEcq7oTYQYDatzRulBf+BQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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