Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25fa7d3a73b8044cc12893ba93f4535c3cfe59ecc2b3ef06b14372f3a24626f1' 
  AND token = 'L6KLngReo05H9lSPO9XvBkuJ0ElkBpYNbbMQulLvkDU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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