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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94ba75d74dbf1ce83a85b236537285f26545336d755b43d47f93a870f646cc89' 
  AND token = 'TOl6L2IJxTt6pQ9JiC7e5e2AmJLYAUVw6k4rq/ooUUA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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