Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '602568f2fef48c7beed638afca7fde9c4e1b024407f74d0b92250b69952e7f39' 
  AND token = 'jBNbg/pAtPJiTQlYp2Xj5c3jqOlBpc5YWBPWDdtkBuw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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