Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '67460caca471c08384f0ccc0cbce26748e19988dd595f5cfc0283d680b3fae27' 
  AND token = 'moYb/694cOrZrtUAzKDhSdTzEDJiLSgxFho/ZsycqgA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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