Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '442afb5825d27809e2c9982155cb6359bb2b6b2c02bcc5f85318eed98118358d' 
  AND token = 'a4tQbH6HKW39hYVn0uHmtjg82YSl+/E/XN2RJcH6jGA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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