Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13f31186892fc98b706849b9ab4208e78979bdf2d0b7aea71827bcd09a68748e' 
  AND token = 'ias9W3gXIBZO11fOxexlgsIuMdpi3b1ct9vHoZldSq4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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