Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac5697e79fc5e915eb199ae1e0edd70906ba1c7d3d9e128ac71c2c9d12c33c70' 
  AND token = 'n6Jp99cuotqhEqWgCkc5N5dkRa8iDpNARjjxYSUwu50=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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