Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96698c2748d48e3f4dcbcbd9e64b077ed4ffa4232670644f295024d9ff202fad' 
  AND token = 'NLGnPiuKaEuRWj/xhbZVC287OKCgKXUiQennpcIfSvQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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