Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ed6c6d48669ea42f712b99a3d867a89684b6e1217a8c4959369071592d85f92' 
  AND token = 'SYaYwNe8aqlE1Wl12d1s34GsUKUJ6p7vp5aj/5U8oV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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