Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5780e7f90aafbd802bb298db0608a64576495209ef38a5c07d321c55bfef5571' 
  AND token = 'vNWnsfZaLy9BbPBYqzAr5ZRxTUh7JJsJFY6RgCsqRh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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