Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '122f4b955a7e1b5510c7d57c3f27034e748c8ba411a77f3693d070412f879f9b' 
  AND token = 'IYVpQ3yedt/wGUx6GZ9HFNYrJ2Mgv4YyTYZ5srrxyiY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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