Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66cee981facaba5f40d3c627c8666710299be3cc241847f7b04be115757c73c2' 
  AND token = 'Ffa6NICcGWD+lo8df5WfU5wAVFlpmaMiBnm6ueKmiwg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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