Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '232a5a1d44d05cd4fc2486fef791683316913dafc3b730420b1c7bf13b7e4711' 
  AND token = 'kKbTBMKHr0GDzIyJSp1w2w9SQ58kGVsydsLJLUX4rvM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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