Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2613796632736dd7abc8adf10f5dc3601fddc531c0dc1b2b0a69a276758c3d09' 
  AND token = 'VVAu+xkPnSKje8f5B7oIfRi3ue2/qiRfg6HFZzu09VY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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