Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dc562b1f54eac6402834e9533f06f0c29de6d272fa07b2cd4a42805ae9b019d8' 
  AND token = 'f2dojWok28VlvO84pHMZtxQstkLyk38tvW45BurBMP8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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