Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9cc4ab77341652bc5a255f63f4581cd60bfc006252f9c380a6bd222c0bf2a5d' 
  AND token = 'ggrDVLRbcooyKeREPJvSInGZT87c8hOkN2dOzHNujm0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}