Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87adb7acb26670ceaf475fa1fb684fcbd8d6bace8ef8582345a8d0e5b7d91acd' 
  AND token = 'dVmd4x08jPc+qlNPEjrnwaDtSrVv63qoABl57vTRWLQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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