Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab27ab2d2a3921156f05631c5158ccca887e18a0f0567d631a835b24810fdbdf' 
  AND token = 'ZyrlljNiPb89miyD8PVCEd57RBS7Pn5w7kNtewNMRYM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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