Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41e610e248581576f5d13cc2d10da319c1859c337b42bd2dc4de2bc7fee3d918' 
  AND token = 'Vvobcaw4bmz6PpDhQhSJjsfGqEeozmG8IT2iCMeb4Ns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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