Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69218c911c1638fdc05735f0adbdd969be707461569c45e4aa046571f417c953' 
  AND token = 'h/KiZm9RfDlmGz19GLUKUomtWU8zWy+RNHUbGo9nlYc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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