Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a2c49c2c001d1787c4df17be2fa028aef7797e350c0b2f5ba28d8731e6b7791' 
  AND token = 'gF+q89QkxINzbLgYwpt+lqzyUQDX7VMgd0ZLIBkuL7k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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