Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02df12963baa164fdb00f81fda991dc774af2f5ef5bdf6966f75050434b46f40' 
  AND token = 'wAY1T01Kr9jSft43lriqoHjBzBx6BC5TZgitfrcT4zs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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