Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0afe9f26fe63bea1a4a146b08324396c412fa2d167fa7084e52fb6c44f88fbd0' 
  AND token = 'nIOZYmR1TC5bv8GL4WfcIrAoL3N5DJvcJaMjNUETzDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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