Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ef300e74d640ec3d134486644f1742330a067277d6ea8840d0781869d865f772' 
  AND token = 'qjMrpPQM3UZS8kcszjXoQo7ffsXX/9B7YW9FjM+OcPg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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