Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5aeb7c396c0024e734c3a4b38bc756dd24052a882fc12549a3276821b379bc5d' 
  AND token = 'eI2PRtul4bmtNh0jDuKm0P5LV/gSxuFPvc3D9CqcVyI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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