Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67b0eccd724a9d52636eae4d1ee719cf9e7a8240284489e13453a3e864b2fc96' 
  AND token = 'ynIYLQ3Ct90i1tDjdt3o0QTy4eS+3WMu4R493YO0aR8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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