Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ddb3e071b296ec8428d2543a53e50b2453c5677402e342070399d1d30d85b2e' 
  AND token = 'CXu/YJRmle3pQAj/sgHlV9J2IljoQfi9yOB9nWAo+aw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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