Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4614a672f2ad51c91f183346018586207f4d1ba78a7ca356945fbdce07fbb677' 
  AND token = 'DLWWc32I2Kw90xet9bY+DsoowIlRP/ayLOoBL0I0L6Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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