Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29825b8cbe2175da5b57ef1b258ee93b0f1b91e852d93445e08e3e391b3ea3b6' 
  AND token = 'knsT1z3AlytnAtyD/LjsGXZOYVVBMOD0lWBirY+X7t4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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