Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f6d9c1ed2f222de3f31bbbae3e02f2592925a51418c14254b3b2987822095e2' 
  AND token = 'LSkfv9bNHAz5QDXwF2X4A19Vk7iJmpRLZnZil9Hgxjg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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