Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95ae39c6890ab50ca117d434eceac0b5439b013e83470d81ec5fcd57c9b8610e' 
  AND token = 'M0WtLQu7hMY+ryDBONrPX3z3GApqL2pfsDyPQE4u4Yw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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