Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de4e62c73be95514f2ced6ce887a7baa6b9af8c0b92224ba59d8957785abce7f' 
  AND token = 'MfS0sMM5QnQvZvx45QP7X1m3NscWk8IsAA+9vTXuKAg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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