Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3d2add2e1b2c78e853ec387e8428851eb6a1b0e5aa803d565a6318819d79655' 
  AND token = 'AVVRx5WM9OJHr+LOx0CDodwnXFYIyhwej7wZSRZCRjs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}