SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94371de61571a9d38b6962109112eb18764b46016a7104bba4021dc2ea0c7ddf' 
  AND token = 'Pcz/pLBxBdmrpqnkYTVyZSEe5wPJqSQ5gXGlSYVhkLA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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