Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65f9dc52787d64131ca97c77073b4e46370ca34a328c0d9150604876945f57e9' 
  AND token = '0DTkdTbZ35Nzuo1zlLX705TN3/xp1vu9om3AhuOdGAc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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