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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb3914d83d1a6d302e4082f61b0d0236b638e8d3f92ad4152cbef61d04d9ee2d' 
  AND token = 'LN06y5BYpNu/+DXxTqXoKIfYzaAii9dJzYUe1x7JFjc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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