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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'daaf263c160963fe4fb762dfcfa283275580551c66355f23b8cd6f10f4a48518' 
  AND token = '5xysJFM0LZbhRLZBGqlcvxW0U4Wp1Sh+GiyboNQVee8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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