Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47c750a0d5cb4d43f2c0d40872b050c1ca90015ac721b53b188fb3c52ce3590b' 
  AND token = 'OojLo8tV3QJTL/drR9gFFcTQZ8wMdJNkbRD8h6XqqAA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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