Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '413f4fa79c07faa5350f2abc084f4b79269f74001191e6f57612cbf724f41e2a' 
  AND token = 'SF1HugSinn9LJJAaA8Moy1cNaOfjSIIxETzxjBO3Gew=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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