Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd27853708868349135b3c4ec44b4eff35014d1fb93d4d3e46f55a723dcf6165' 
  AND token = 'U3ErAyHtkEE1sczL/fpIgRodnJazGqr3LrbS/pQjE3E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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