Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'dcb1a80018b9492baca4114ab709a3d9160ab2cb8169c936882b5b13c943bb0e' 
  AND token = '3ENe866Lii2+uIgnUasG+wbegRYcy9zXq3bpKq5eD6M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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