Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22d50330470367414d1a13456e8195114e574a0250646c4929fa4715e7b94b74' 
  AND token = 'h0oPjebKCK4MgmpEkvGdRc+uXH4H/Hxs8a8zn5DJcMs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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