Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2f425f934c392ef7ce2becffdd62041a0076f56521a8f8c041951d915c57e3d' 
  AND token = 'RuaBn/lsKxFdkXf8x2t0GHE5aiTukqPeyEu03OzGJ3w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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