Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3b0815112179109c93dea3885ced97ca323332babda3bee4e55f7f814deb152a' 
  AND token = 'ycN/X3dhEX/oQFUu1NES0F5NwDTCBcqdSxrOjiuWMa4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00121

JSON explain

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